Answer: True
Explanation: Graves disease is an autoimmune disorder that leads to the overproduction of thyroid hormones, a condition known as hyperthyroidism. In this disease, the immune system mistakenly attacks the thyroid gland, causing it to become overactive. The result is an excessive secretion of thyroid hormones, which can significantly increase the body’s metabolism. This hypersecretion is what characterizes Graves disease and is responsible for various symptoms such as weight loss, increased heart rate, nervousness, and other metabolic disturbances. Essentially, the hypersecretion of thyroid hormone is both a consequence of and a contributing factor to Graves disease.